Oliver tried to revert Stewart back to his old self, employing a host of oddball techniques. But Stewart jumped from identity to identity, appearing as a host of other personas before Oliver called in for some back up to help – host of "The Colbert Report," Stephen Colbert.

With Colbert appearing in a Hazmat suit, he was able to help transform Stewart back to "The Daily Show" host viewers are used to seeing.

Stewart has been away for three months from the show, shooting and directing an independent film "Rosewater" in Jordan. The film is an adaptation of BBC journalist, Maziar Bahari's best-selling memoir of his captivity after the Iranian government arrested him while covering an election protest in 2009, according to The Hollywood Reporter.

As he took his all-familiar seat as the Comedy Central show's host – a position he's held for the past 14 years – Stewart beckoned the camera close to whisper to his audience.

"I've missed you so much," he said.

Stewart then invited his fill-in host for the summer, John Oliver, onto the stage to thank him for the "incredible job" he did while he was away.

And they both quickly referenced some of the stories Stewart missed over the summer –Paula Deen's use of the N-word, Anthony Weiner's alter Internet sexting ego "Carlos Danger" and Miley Cyrus' "twerking" performance at the MTV Video Music Awards.

But what did Stewart have to cover upon his triumphant return? He's left to report on the ongoing debate over a potential U.S. military strike over Syrian President Bashar al-Assad's reported use of chemical weapons on his own people.

Stewart appeared mildly disappointed that he missed all the fun over the summer.

"Good luck with that," Oliver said, as he pat Stewart on the back and rushed off the stage.